Kennametal 1159601 CNMG431 KC730 Turning Insert Carbide

Product Description

The KENNAMETAL 1159601 is a solid carbide turning insert with a PVD-applied TiN coating, designed for precision metal removal in CNC and manual turning applications. Conforming to ANSI insert code CNMG431 and ISO code CNMG120404, it features an 80-degree diamond (rhombic) shape, a negative rake angle, and a neutral hand orientation. The insert measures 12.9 mm (0.508 inches) in length with a 0.5-inch inscribed circle and a 1/64-inch (0.0156-inch) corner radius. The KC730 grade delivers high wear resistance to moderate wear resistance and toughness across steel, stainless steel, and cast iron workpiece materials. Intended for turning, facing, and boring operations, this insert is installed by CNC machinists and tool-room technicians in production and job-shop environments.

The KENNAMETAL 1159601 is suited for medium machining chip-breaker conditions on steel (P), stainless steel (M), and cast iron (K) workpieces, with secondary compatibility on superalloys and titanium (S). Typical install scenarios include general-purpose turning and facing on horizontal and vertical lathes and turning centers. The KENLOC series insert is held in place using a clamp-and-pin method, making it compatible with standard CNMG toolholders found across most production turning setups. Maximum depth of cut is 1.25 mm (0.049 inches).

Key Features

• ANSI code CNMG431 and ISO code CNMG120404 for broad toolholder compatibility
• KC730 grade with PVD TiN coating for high wear resistance on steel and stainless steel
• 80-degree diamond insert shape with negative rake and negative side clearance for rigid cutting geometry
• Four usable cutting edges per insert to maximize cost-per-edge value
• Chamfered and honed cutting edge style for edge stability in medium machining operations
• Clamp and pin holding method compatible with KENLOC series toolholders

Compatibility

Designed as an OEM-specification replacement for CNMG431 insert positions in KENLOC series toolholders. Conforms to ANSI and ISO standards for CNMG-style inserts, fitting standard negative-rake CNMG toolholders. No specific machine or toolholder model numbers were provided in the product data.

Installation Notes

Insert replacement and seating should be performed by a qualified machinist with the machine fully stopped and de-energized. Inspect the toolholder pocket and clamping pin for wear or debris before seating the insert. Torque the clamp according to the toolholder manufacturer specifications — no torque value is specified for this insert alone. Confirm secure seating before resuming cuts to prevent insert movement or tool failure.